Copper(II) complexes with 2,5-bis(2-pyridyl)pyrazine and 1,1,3,3-tetracyano-2-ethoxypropenide anion: Syntheses, crystal structures and magnetic properties

Bis[tris(pyridin-2-yl)amine]iron(II) tris(dicyanomethylidene)methanediide

“…As a consequence of their ability to link metal ions in a variety of different ways, polynitrile anions, either functioning alone or in combination with neutral co-ligands, provide opportunities for the generation of molecular architectures with varying dimensions and topologies (Miyazaki et al, 2003;Benmansour et al, 2007Benmansour et al, , 2008Benmansour et al, , 2012Atmani et al, 2008;Yuste et al, 2009). The presence of other potential donor groups such as those derived from -OH, -SH or -NH 2 , together with their rigidity and electronic delocalization, mean that polynitrile anions can also lead to new bistable materials (Benmansour et al, 2010;Setifi et al, 2009Setifi et al, , 2014Pittala et al, 2017).…”

Bis{bis(azido-κN)bis[bis(pyridin-2-yl-κN)amine]cobalt(III)} sulfate dihydrate

“…In recent years, molecular magnetism has attracted great attention due to the interest in designing new molecular materials with interesting magnetic properties and potential applications (Kahn, 1993;Miller & Gatteschi, 2011). Connecting paramagnetic ions by use of bridging polynitrile or pseudohalide ligands is an important strategy in the design of such materials (Setifi et al, 2002(Setifi et al, , 2003(Setifi et al, , 2013(Setifi et al, , 2014Benmansour et al, 2008Benmansour et al, , 2009Yuste et al, 2009). As a short bridging ligand and efficient superexchange mediator, the pseudohalide azide ion has proven to be very versatile and diverse in both coordination chemistry and magnetism.…”

Crystal structure of poly[diaqua(μ-2-carboxyacetato-κ3O,O′:O′′)(2-carboxyacetato-κO)di-μ-chlorido-dicobalt(II)]

“…Complexes with paramagnetic metal ions and extended structures are interesting due to their potential applications in molecular magnetism (Moroz et al, 2012;Pavlishchuk et al, 2010Pavlishchuk et al, , 2011Yuste et al, 2009). Malonic acid exhibits both chelating and bridging modes of coordination and is an efficient ligand for achieving two-or three-dimensional polymeric structures (Delgado et al, 2004).…”